Abstract
This paper shows how casual speech can be taught in the classroom for research students and reports some class activities for it. In Japanese language classrooms, polite styles have been primarily taught because Japanese language teachers as well as researchers generally believe that those styles are more useful and easy-to-learn in JSL environments. In contrast, an increasing number of learners recognize the need for acquiring casual speech in order to adapt to Japanese community quickly and smoothly. The effective way of learning casual speech is essential to enhance their Japanese language learning.
